Abstract：The crashworthiness of civil aircraft in emergency landing is directly related to the safety of passengers, which is an important reflection of the safety of civil aircraft. Crashworthiness of airframe structure is a complex nonlinear impact dynamics problem, which involves large deformation, fracture failure and dynamic contact. The airworthiness standards for transport aircraft have clearly stipulated the crashworthiness of airframe structures, requiring reasonable design to avoid the crew from bearing excessively severe impact loads and to maintain the effective restraint of the large mass body in the cabin, to maintain the occupant viable space and the availability of the occupant evacuation channel, the relevant design needs to be evaluated by experimental or validated analytical methods. In this paper, several key problems in the research of crashworthiness of civil aircraft fuselage structure, such as the impact dynamics behavior of fasteners and mechanical connecting structures, the design method of high efficient energy absorbing structures, and the experimental and numerical methods of crashworthiness assessment in recent years are analyzed, the main research progress is summarized, and the main challenges are analyzed.
2020, Vol. 41 
